Pneumatic ratchet wrench



FIG. 1 is a right side front perspective view showing our design for a pneumatic ratchet wrench;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines shown in the drawings form no part of the claimed design. 

The ornamental design for a pneumatic ratchet wrench, as shown and described. 